1 files changed, 94 insertions, 0 deletions
diff --git a/src/components/Grid.tsx b/src/components/Grid.tsx
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+++ b/src/components/Grid.tsx
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+/*
+ * Tic Tac Toe - Minimalistic Tic Tac Toe
+ * Copyright (C) 2021  Vidhu Kant Sharma
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+import React, { useState, useEffect, Dispatch, SetStateAction } from 'react';
+import Box from './Box';
+import './style.css';
+
+interface Props {
+  scoreX: number
+  scoreO: number
+  setScoreX: Dispatch<SetStateAction<number>>
+  setScoreO: Dispatch<SetStateAction<number>>
+}
+
+const Grid: React.FC<Props> = (props) => {
+  // 0 is O, 1 is X, 2 is blank
+  const [board, setBoard] = useState<number[]>([2,2,2,2,2,2,2,2,2]);
+  const [turn, setTurn] = useState<number>(1);
+  const [winner, setWinner] = useState<number>(2)
+
+  const getBoard = (index: number) => {
+    setBoard(board.slice(0, index).concat(turn).concat(board.slice(index+1, 9)));
+    setTurn(turn === 1 ? 0 : 1)
+  }
+
+  const allEqual = (arr: number[]) => arr.includes(2) ? false : arr.every(v => v === arr[0])
+
+  const getRow = (r: number) => board.slice(r * 3, (r * 3) + 3);
+
+  const getCol: any = (c: number, arr=board) => arr.length <= 3 ? arr[c] : [arr[c]].concat(getCol(c, arr.slice(3)))
+
+  const getLeftDiagonal: any = (i: number = 0) =>
+    i < 3 ? [getRow(i)[i]].concat(getLeftDiagonal(i+1)) : [];
+
+  const getRightDiagonal: any = (i: number = 2) =>
+    i >= 0 ? [getRow(2-i)[i]].concat(getRightDiagonal(i-1)) : [];
+
+  const checkHorMatch: any = (rowNum: number = 0) =>
+    rowNum <= 2 && (allEqual(getRow(rowNum)) ? setWinner(turn === 1 ? 0 : 1) : checkHorMatch(rowNum+1))
+
+  const checkVerMatch: any = (colNum: number = 0) =>
+    colNum <= 2 && (allEqual(getCol(colNum)) ? setWinner(turn === 1 ? 0 : 1) : checkVerMatch(colNum+1))
+
+  const checkDiagonalMatch: any = () => {
+    (allEqual(getLeftDiagonal()) || allEqual(getRightDiagonal())) && setWinner(turn === 1 ? 0 : 1)
+  }
+
+  const endGame = (winner: number) => {
+    const gameWinner = winner < 2 ? (winner === 1 ? "X" : "O") : "Draw";
+    alert(`WINNER: ${gameWinner}`)
+    gameWinner === "Draw" || gameWinner === "X" 
+      ? props.setScoreX(props.scoreX + 1) 
+      : props.setScoreO(props.scoreO + 1)
+    // clean up
+    setBoard([2,2,2,2,2,2,2,2,2]);
+    setWinner(2);
+  }
+
+  useEffect(() => {
+    checkHorMatch();
+    checkVerMatch();
+    checkDiagonalMatch();
+    winner < 2 && endGame(winner);
+    board.includes(2) || endGame(2);
+  })
+
+  return (
+    <div className="Grid">
+      {
+        board.map(
+          (i, index) => 
+            <Box key={index} index={index} sign={i} setSign={getBoard}/>
+        )
+      }
+    </div>
+  );
+}
+
+export default Grid;